Hello,
I haven't yet gone over any responses to my original post as I have spent quite a few sleepless nights pouring over this stamp collection...fascinating!
OK, I found another Russian stamp in which the coloring doesn't match the definitive examples. I will post a picture of it here, and some photos of other interesting stamps I've run across thus far. Please keep in mind that a week ago I knew nothing of stamps, so I might use some wording/phrases incorrectly; any corrections are appreciated. I am now half-way through, and frankly, I need to take a break from this for a few days. There are still many countries I have yet to go through e.g. Austria, India, China, and a host of others. Also, I really haven't gone through all my German (pop was German so there are MANY German stamps to go through still), Russian, and British etc...So who knows what remains to be uncovered! There are stamps from all kinds of places, many I've never even heard of. I just started Great Britain and reached burnout with all the watermarks and details.
If you have any info on any of these stamps it would be greatly appreciated. Also, if you want to see a close up or ask about any of these please feel free. If you know of others that I should look for please let me know. There are so many stamps, complete sets, duplicates etc. and I don't know anyone in real life who collects, or knows about, stamps and I don't want to overlook anything that might be valuable.
So guys, round one is over with, check these out and tell me what you think. I will read all your replies and respond as soon as I am able. And I will get to round 2 when I can carve out the time.
Thanks and enjoy,
David
P.S. I am temporarily storing the stamps in PVC free coin flips, as that's what I have at my disposal. If this is bad for the stamps then please let me know.
This another old Russian stamp with unusual coloring

ThisRussian 7 might be valuable but I cant tell.

Czech:

Canada:

German:
Here we have an example of an imperf and perferated stamp and others of interest.

More German:

Italy:
The 2 does not have the estero overprint.

More Italy:


Spain:


Portugal:

Cuba:

Australia:
I believe the 1 has a vertical watermark.

Great Britian:

Sweden:

Some U.S.:
One of the airmail stamps is the "open door" error.
The 10 and 3's are together, still connected at the perferations
Interesting cancelation mark "Mail early for Christmas"

Some interesting pre-cancel marks i.e. 5c postage due with inverted mark.

30c Buffalo with vertical pre-cancelation mark.

That's all I can get to for now. I really need to sit down with someone who knows what all this really is. Identifying a design is one thing, but I know nothing of condition, markings, subtle differences etc...
Thanks again